Turf -获取某点范围内的geojson的所有要素

const turf = require('@turf/turf');

// 定义一个点
const point = turf.point([-122.4194, 37.7749]);

// 定义一个范围，这里使用一个圆形范围
const radius = 10; // 单位为千米
const options = { units: 'kilometers' };
const circle = turf.circle(point, radius, options);

// 定义一个包含要素的geojson
const features = {
  type: 'FeatureCollection',
  features: [
    {
      type: 'Feature',
      properties: {},
      geometry: {
        type: 'Point',
        coordinates: [-122.4194, 37.7749]
      }
    },
    {
      type: 'Feature',
      properties: {},
      geometry: {
        type: 'Point',
        coordinates: [-122.4192, 37.7751]
      }
    },
    {
      type: 'Feature',
      properties: {},
      geometry: {
        type: 'Point',
        coordinates: [-122.4196, 37.7747]
      }
    }
  ]
};

// 使用within函数获取范围内的要素
const withinFeatures = turf.within(features, circle);

console.log(withinFeatures);